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5 Written questions

5 Matching questions

  1. Benthic Zone
  2. Desalination
  3. Pelagic Zone
  4. Bathyal Zone
  5. Nodules
  1. a Begins at the continental slope and extends to a depth of 4,000 meters.
    animals that live there: octopi, sea stars, and brachiopods.
  2. b The region of an ocean or body of fresh water above the benthic zone.
  3. c The bottom region of oceans and bodies of fresh water.
  4. d A process of removing salt from ocean water.
  5. e Potato-shaped lumps of minerals that are found on the abyssal floor of the ocean.

5 Multiple choice questions

  1. All organisms that swim actively in open water, independent of currents
  2. A measure of the amount of dissolved salts in a given amount of liquid. It can be written as salinity = 35 parts per thousand, or 35%.
  3. Dissolved solids that make up about 3.5% of the mass of ocean water. These dissolved solids give the ocean its salty taste.
  4. The shallow benthic zone that most organisms live in; located on the continental shelves and is populated by organisms such as sea stars, brittle stars, and sea lilies.
  5. A popular method for desalinating ocean water. It includes the use of special membranes that allow water under high pressure to pass through and that block the dissolved salts.

5 True/False questions

  1. AquacultureThe raising of aquatic plants and animals for human use or consumption.


  2. Neritic ZoneThe bottom region of oceans and bodies of fresh water.


  3. UpwellingA method of desalination where water is frozen. Then the first ice crystals that form do not contain salt. The ice can be removed and melted to obtain fresh water.


  4. FreezingThe movement of deep, cold, and nutrient-rich water to the surface.


  5. Oceanic ZoneExtends into the deep waters beyond the continental shelf.


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